-LRB- CNN -RRB- Six weeks into the murder trial of former NFL star Aaron Hernandez , jurors in Fall River , Massachusetts , are getting more pieces of a time line leading up to the 2013 shooting death of Odin Lloyd , a semi-pro football player who was dating the sister of Hernandez 's fiancée .

Taking center stage this week -- videotape never before seen in public , taken from Hernandez 's own home security system .

Prosecutors are using that grainy footage to suggest Hernandez is holding a .45 - caliber handgun -- the same kind police say was used to kill Lloyd . Hernandez is seen on camera pulling into his driveway minutes after Lloyd was shot to death in an industrial park about a mile from Hernandez ' Boston home .

`` In my opinion , the firearm shown in the video stills is a Glock pistol , '' Glock sales manager Kyle Aspinwall testifies .

Hernandez , Ernest Wallace , and Carlos Ortiz are seen on the same security video , recorded at about 3:30 a.m. on June 17 , 2013 , after the men walk into Hernandez 's home . All three have been charged with murder in the death of Lloyd and have pleaded not guilty . Wallace and Ortiz are being tried separately .

The video is time-stamped minutes after workers in a nearby industrial park describe hearing loud noises like fireworks -- the moment prosecutors say Lloyd was gunned down after getting out of a car driven by Hernandez .

Jurors lean forward in their chairs , peering into monitors and scribbling notes as Aspinwall , a former Massachusetts state trooper and New Hampshire police chief , takes them frame by frame through video during two days of testimony .

Aspinwall tells jurors Hernandez appears to be holding the pistol by its muzzle as he 's standing at his basement door .

The defense will have none of it . They attack Aspinwall 's credentials . Aspinwall is well-schooled in Glocks but admits he does n't consider himself a gun identification expert .

Hernandez 's lawyers then show a different part of the video time-stamped a few seconds earlier with Hernandez holding what appears to be a shiny object in one hand , suggesting it may be an iPad .

`` Glock pistols do n't have white glows to them , do they ? '' defense attorney James Sultan asks .

`` No , they do not , '' Aspinwall answers .

Sultan then displays a soft-pellet gun similar in shape to a Glock , suggesting it could also be the object Hernandez is holding .

Prosecutors dispute the suggestion .

`` Are you aware of anybody going pellet gun shooting at 3:30 in the morning ? '' Bristol County Assistant District Attorney Patrick Bomberg asks Aspinwall .

University of New Hampshire law professor Michael McCann calls the Glock expert 's findings powerful ; yet , he thinks the defense did a solid job of raising questions about the fuzzy video .

`` The jury might think that the defense is just throwing things against the wall , '' he says . `` But on the other hand , the jury may feel like it could be one of a dozen things . That 's reasonable doubt . ''

One thing not in dispute : the alleged murder weapon remains missing .

So does a solid motive .

Prosecutors could be laying the groundwork for showing more surveillance video of Hernandez -- who at the time was a star receiver for the New England Patriots -- partying with Lloyd and Hernandez 's personal barber at Rumor nightclub two nights before Lloyd 's death .

Investigators say Hernandez was angry that Lloyd was talking to some people that night .

Hernandez and Lloyd are not seen together on a camera pointed at the club 's bar , and they appear to be separated for a time when they leave , but so far there 's no testimony about what may have gone wrong .

What might Hernandez 's fiancée say ?

Akil Joseph , a longtime friend of Lloyd 's who takes the stand , tells jurors he talked with Lloyd at the club and says he appeared `` normal . '' When Azil Joseph leaves the stand , he keeps his eyes locked on Hernandez until he walks past the defense table .

Cameras show Hernandez leaving the bar , but they do not show the moment when a parking valet testified he saw what he believed to be a gun in Hernandez 's waistband . The valet 's hotel security boss tells jurors he did n't see a weapon under the football player 's shirt .

Near the club , Hernandez is in his SUV with Lloyd and another friend . Hernandez offers a ride to Jennifer Fortier , his babysitter , who happened to be nearby with a friend .

Fortier tells jurors Hernandez and Lloyd were smoking pot . Despite her objections , Hernandez drives her and the friend to Hernandez 's so-called `` flophouse '' about 20 minutes from Gillette Stadium , the Patriots ' home field in Foxborough .

Fortier testifies that Hernandez `` tried kissing me . ''

`` I told him ` No , I 'm your nanny . I ca n't do this , ' '' she adds . `` He said he understood ... and he was n't mad at me . ''

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Aaron Hernandez on trial for death of Odin Lloyd

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Testimony focused on security video from Hernandez 's home

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Debate over whether Hernandez holding gun or electronic device